Material:Silicone: Difference between revisions
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Silicone sealant is usually pressed out of cartridges with a [[Caulking Gun|caulking gun]] and hardens upon air contact. A common workshop trick is to seal the cartridge with an old [[Wood Screws|wood screw]] after using to prevent the formation of a clog in the nozzle. | Silicone sealant is usually pressed out of cartridges with a [[Caulking Gun|caulking gun]] and hardens upon air contact. A common workshop trick is to seal the cartridge with an old [[Wood Screws|wood screw]] after using to prevent the formation of a clog in the nozzle. | ||
For a nice finish, lay down an even bead with the caulking gun and spray some water or a water/dish soap mixture on it. Smoothen the sealant with a light pass of a finger, popsicle stick or a special little plastic card for this purpose. Instead of spraying, you can also just wet your finger/tool! | |||
If you've made a mistake, better be quick - water can help very early on, when the sealant is partially dried there are special silicone removing agents, and when it's dry you can't do much except scrape/rub/pull it off with '''a lot''' of patience... | |||
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== Molding Silicone == | == Molding Silicone == | ||
{{MaterialInfoBox | {{MaterialInfoBox | ||
Revision as of 16:33, 27 October 2017
Silicones (not to be confused with the semiconducting element silicon) are a group of synthetic polymers with various properties. Some of these, e.g. heat resistance and flexibility, are very desirable in a product or prototype.
Silicone Sealant
| MaterialInfoBox Silicone Sealant | |
|---|---|
| |
| Synonyms: | silicone caulking; DE: Dichtsilikon |
| Suggested Tools: | caulking gun |
Silicone sealant is usually pressed out of cartridges with a caulking gun and hardens upon air contact. A common workshop trick is to seal the cartridge with an old wood screw after using to prevent the formation of a clog in the nozzle.
For a nice finish, lay down an even bead with the caulking gun and spray some water or a water/dish soap mixture on it. Smoothen the sealant with a light pass of a finger, popsicle stick or a special little plastic card for this purpose. Instead of spraying, you can also just wet your finger/tool!
If you've made a mistake, better be quick - water can help very early on, when the sealant is partially dried there are special silicone removing agents, and when it's dry you can't do much except scrape/rub/pull it off with a lot of patience...
Molding Silicone
| MaterialInfoBox Molding Silicone | |
|---|---|
| |
| Synonyms: | DE: Gießsilikon |
| Suggested Tools: | |
Molding silicone is used to create a negative mold from (almost) any template. We have documented the procedure here.
There are different types, food safe silicone is more expensive. If you want to make non-food molds, e.g. for candles, consider using the cheaper silicone.
